DV6ATED4 1.6 HDi Engine Smoking, Stalling or Losing Power: Diagnosis and Models

The DV6ATED4 1.6 HDi engine is fitted to millions of Peugeot and Citroën vehicles. Reliable in its early years, it develops well-recognised signs of wear over time: persistent blue smoke, a marked loss of power, abnormal oil consumption, or difficulty starting. Before choosing a solution, you need to pinpoint exactly what is happening under the bonnet — and that is precisely what this article covers, with the actual references available from EDEN BOITES.

Our available references for this model

Reconditioned Citroën Berlingo 1.6 HDi Engine – Bare Engine – Ref. DV6ATED4

12-month warranty

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Reconditioned Citroën C4 1.6 HDi Engine – Bare Engine – Ref. DV6ATED4

12-month warranty

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Reconditioned Peugeot 307 1.6 HDi Engine – Bare Engine – Ref. DV6ATED4

12-month warranty

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Which vehicles are fitted with the DV6ATED4 engine?

The engine code DV6ATED4 — sometimes listed as DV6ATED4_9HX depending on the sub-variant — covers a wide range of compact and light commercial models from the PSA group. Below are the actual references available from EDEN BOITES, taken from the DV6ATED4 engine collection:

The engine code is stamped on the block and also appears on the vehicle registration document. If in doubt, provide your VIN when requesting a quote.

What are the symptoms of a failing DV6ATED4 engine?

The DV6ATED4 displays wear symptoms that, taken individually, can point to other components (turbo, injectors, EGR valve). The following signs point specifically to the engine block itself:

• Blue smoke on cold start or during deceleration: the classic sign of oil consumption through the piston rings or valve guides. Distinct from white smoke (coolant) or black smoke (over-fuelling).
• High oil consumption between services: the engine uses more than one litre every 3,000 km with no visible external leak. This is often overlooked until the level drops too low and accelerates internal wear.
• Marked loss of power with the engine warning light on: when a fault code confirms insufficient compression pressure on one or more cylinders, the engine itself must be investigated before replacing the turbo or injectors.
• Metallic knocking at operating temperature: a persistent background noise that worsens under load; a sign of worn big-end bearings or crankshaft wear.
• Difficult cold starting or failure to start: may indicate a drop in cylinder compression, to be distinguished from a glow plug fault or failing injectors.
• Inadequate cooling with recurring overheating: when coolant disappears with no visible external leak, a damaged head gasket or a cracked block should be considered.

How to accurately diagnose a failing DV6ATED4 engine?

A thorough workshop diagnosis avoids unnecessarily replacing costly ancillary components. Here is the recommended step-by-step procedure:

1. OBD fault code reading: the essential first step. The codes present give a direction, but are not sufficient on their own to decide on an engine replacement.
2. Compression test: the per-cylinder compression test is the key measurement. A significant difference between cylinders, or uniformly low readings, indicates internal block wear.
3. Compression leak-down test: complements the previous test by locating whether the leak is past the rings, the valves, or the head gasket.
4. Oil analysis: the presence of fuel in the oil, a milky appearance (water ingress), or metallic particles are all indicators of advanced block wear.
5. Cooling circuit check: testing for combustion gases in the coolant to detect a cracked cylinder head or block.

If these tests confirm major internal block wear, a rebuilt exchange engine is often the most cost-effective solution: considerably cheaper than a manufacturer new unit, and with a part restored to original tolerances.

DV6ATED4 exchange engine: how does it work in practice?

All DV6ATED4 engines offered by EDEN BOITES are sold on an exchange basis. This arrangement is straightforward but carries one essential condition: you return your old engine block after receiving the rebuilt engine. This return is mandatory and is a condition of the transaction.

The engine is supplied bare: ancillary components (timing kit, turbo, injection system, alternator, etc.) are not included, as they vary by variant and are confirmed at the quoting stage. Plan to reuse or replace them depending on the condition of your vehicle.

The parts warranty is up to 24 months depending on the reference chosen. Please note that the warranty covers the part itself exclusively.

DV6ATED4 or DV6ATED4_9HX: which reference do I need to order?

Both engine codes correspond to sub-variants of the same 1.6 HDi block. The DV6ATED4_9HX variant is specifically referenced for the Peugeot 207 (2006-2013) and the Citroën Berlingo (2005-2018). The code is stamped on the engine block and is generally visible without dismantling. It also appears on your service documents or can be confirmed via the VIN. If in doubt, send your VIN to EDEN BOITES when requesting a quote: it is the most reliable way to avoid any reference errors.

Why choose a rebuilt engine over a second-hand engine?

A second-hand engine taken from a salvage vehicle has an unknown history: actual mileage uncertain, ring wear impossible to verify without stripping, and the risk of facing the same problems again a few months later. An engine rebuilt by EDEN BOITES is restored to original machining tolerances: block resurfacing, replacement of internal wear parts, and reassembly to manufacturer specifications. It represents a saving of several thousand euros compared with a manufacturer new unit, with traceability and a parts warranty that a second-hand engine simply cannot offer.

FAQ — DV6ATED4 1.6 HDi Engine

How do I know whether my DV6ATED4 engine is worn out or whether it is the turbo?

The line can sometimes be blurred. A failing turbo mainly causes a gradual loss of power and black smoke (over-fuelling) or blue smoke (oil drawn in by the turbo). To tell the two apart, a per-cylinder compression test is essential: if the readings are consistent and close to manufacturer specifications, the engine is sound and the turbo or injection system should be investigated. If compression is low or uneven, the block is at fault.

My Citroën Berlingo 1.6 HDi is using 1.5 litres of oil every 3,000 km — is that normal?

No. Such high oil consumption, with no visible leak under the vehicle, generally indicates worn piston rings or valve guides. On a high-mileage Berlingo DV6ATED4, this symptom combined with blue smoke on start-up is often a clear sign of advanced internal block wear.

Is the Peugeot 308 1.6 HDi affected by specific engine faults?

The Peugeot 308 DV6ATED4 is subject to the same internal wear issues as other PSA group models fitted with this block: oil consumption, compression loss, and hot knocking. Both the 308 I (T7) and 308 II (T9) generations are listed with EDEN BOITES on an exchange basis.

What does the exchange arrangement mean for me, whether I am a garage or a private customer?

You receive the rebuilt engine, remove the old block, and fit the bare engine. Your old engine block must then be returned: that is the condition of the exchange. This return is mandatory. Ancillary components (turbo, injectors, timing kit, etc.) are not supplied with the bare engine and must be managed separately depending on the condition of your vehicle.

How long is the warranty on the rebuilt DV6ATED4 engine?

The parts warranty is up to 24 months depending on the reference ordered. For the Peugeot 207 (DV6ATED4_9HX) and the Berlingo (DV6ATED4_9HX), the warranty is 24 months on the part. For other references, it is 12 months on the part. The warranty covers the part itself exclusively.

Can I get a quote quickly without having to travel?

Yes. EDEN BOITES processes quote requests within a few hours. Enter your model, engine size, the engine code stamped on the block, and/or your VIN via the online form. This information allows us to confirm the exact reference and avoid any compatibility errors before you place your order.

Is it possible to pay in instalments?

Yes, EDEN BOITES offers the option to pay in up to 10 instalments. Financing terms are confirmed at the quoting stage or when you place your order.

How do I confirm that my vehicle's engine code is DV6ATED4?

The engine code is stamped directly on the engine block, usually on a face accessible from above or from the side. It can also be read using a diagnostic tool connected to the OBD port. As a last resort, provide your VIN (vehicle chassis number) to EDEN BOITES: verification is carried out before your quote is confirmed.

Request your DV6ATED4 engine quote now

Provide your model, engine size, engine code (DV6ATED4 or DV6ATED4_9HX), and your VIN or engine number. Your quote will be returned within a few hours. Payment available in up to 10 instalments.